After resuming his studies post-military service, Seong-Woo's routine student life takes a drastic turn when a mysterious prompt in class prompts him and his peers to pick a role. Opting for the necromancer, an extraordinary skill enabling him to command the undead, Seong-Woo faces a world teetering on chaos. To combat menacing creatures and protect his classmates, he must harness his newfound abilities. Yet, the looming question remains – will they survive this harrowing ordeal?